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3 years ago

How do you know if an expression is a polynomial, i am completely clueless

1 answer:

8 0

In mathematics, a polynomial is an expression consisting of variables (also called indeterminates) and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponents of variables. An example of a polynomial of a single indeterminate, x, is x2 − 4x + 7.

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Find x y and z in this probelm

marishachu [46]

For the top shape, x = 11, y = 10 and z = 14.

Start with the equation: 11y + 7y = 180 because those two angles are supplementary. Solving that will give you that y = 10.

The angle that is labelled 7y is therefore 70 degrees. We can write the following equation will the 5x because it is corresponding to the 70 degree angle.

5z = 70
z = 14

And we can also write and solve for the x, using the 70 degree angle.
70 + 10x = 180
10x = 110
x = 11

5 0

4 years ago

What is 791.483 rounded to the nearest whole number?<br><br><br> please help me!!

sveticcg [70]

791 since it has no decimal places

3 0

3 years ago

16. PHYSICS The formula h = 1201 - 16t2 gives the height h in feet of an object 1 seconds after it is shot upward from

Murrr4er [49]

<h3><u>Question:</u></h3>

The formula h = 120t-16t^2 gives the height h in feet of an object t seconds after it is shot upward from Earth's surface with an initial velocity of 120 feet per second. What will the height of the object be after 6 seconds?

<h3><u>Answer:</u></h3>

The height of object after 6 seconds is 144 feet

<h3><u>Solution:</u></h3>

<em><u>The formula that gives the height of an object is:</u></em>

$h = 120t - 16t^2$

Where,

h is the height in feet and t is the time in seconds

To find: height of the object be after 6 seconds

To find the height of the object be after 6 seconds, substitute t = 6

$h = 120 \times 6 -16(6)^2\\\\h = 720 - 16 \times 36\\\\h = 720 - 576\\\\h = 144$

Thus height of object after 6 seconds is 144 feet

3 0

3 years ago

Name the angle in four ways. Then classify the angle as acute,right,obtuse, or straight.

kirill115 [55]

Answer:

∡RST

∡S

∡TSR

∡4

this appears to be an obtuse angle

Step-by-step explanation:

∡RST

∡S

∡TSR

∡4

this appears to be an obtuse angle

5 0

3 years ago

Is 1/sec^2(θ) the same as cos^2(θ)

dexar [7]

$\frac{1}{sec^2\theta}=cos^2\theta\\\\L=\frac{1}{\left(\frac{1}{cos\theta}\right)^2}=\frac{1}{\frac{1}{cos^2\theta}}=1:\frac{1}{cos^2\theta}=1\cdot\frac{cos^2\theta}{1}=cos^2\theta=R$

8 0

3 years ago